// Program to demonstrate the use of interfaces to define ADTs

public class ListClient {
  public static void main(String[] args) {
    IntList list1 = new ArrayIntList();
    processList(list1);

    System.out.println();
    IntList list2 = new LinkedIntList();
    processList(list2);
  }
  
  public static void processList(IntList list) {
    list.add(18);
    list.add(27);
    list.add(93);
    System.out.println(list);
    list.remove(1);
    System.out.println(list);
  }
}